Why do Ontario driveways and brick crack so much?

Freeze-thaw cycling. Southern Ontario winters repeatedly cross 0°C, so water gets into small cracks, freezes, expands, and pries them wider — dozens of times a season. Sealing cracks in fall, before the cycling starts, is the highest-leverage maintenance in the province.

How do I stop ice dams on an Ontario roof?

Short term, clear gutters in fall and rake the lower roof after big snowfalls. Long term, the fix is in the attic: air sealing and insulation so house heat stops melting the snow from below. If you get dams every winter, book an attic assessment — it usually pays for itself in prevented ceiling repairs.

Homeowner guide · Ontario

Home maintenance in Ontario

Ontario's defining maintenance problem is freeze-thaw: southern Ontario winters cross the freezing mark dozens of times a season, working water into every crack in driveways, brick, and shingles and prying them open. Add ice storms that bring down branches, humid summers that push moisture into basements, and lake-effect snow in the snowbelt, and the priorities are clear — seal the exterior in fall, manage water aggressively, and keep the trees off the house.

Dozens of freezing-point crossings each southern Ontario winter: Freeze-thaw
1998 and 2013 made tree pruning a maintenance item, not landscaping: Ice storms
Basement dehumidifiers earn their keep from May to October: Humid summers

What to prioritize in Ontario

Freeze-thaw damage is cumulative, so Ontario rewards the sealing work more than most provinces: every crack you fill in caulking, masonry, or asphalt in the fall is one that water can't wedge open forty times over the winter.

Repoint and seal brick before winter — spalling brick (faces popping off) is freeze-thaw damage, and Ontario's housing stock is full of brick.
Keep gutters and downspouts moving water away all winter; freeze-thaw turns pooled meltwater into foundation pressure.
Prune deadwood and overhanging limbs every year — ice storms find the branch you left.
Air-seal and insulate the attic to stop ice dams; snowbelt homes from Barrie through London and the Bruce carry real snow loads.
Run a basement dehumidifier through the humid months and test the sump pump before both the spring melt and summer downpour season.

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Home maintenance in Ontario — FAQ

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